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AD7013 Datasheet(PDF) 5 Page - Analog Devices

Part No. AD7013
Description  CMOS TIA IS-54 Baseband Receive Port
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Maker  AD [Analog Devices]
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AD7013 Datasheet(HTML) 5 Page - Analog Devices

 
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REV. A
AD7013
–5–
PIN FUNCTION DESCRIPTIONS
SSOP Pin
Number
Mnemonic
Function
POWER SUPPLY
1V
AA
Positive Power Supply for Analog section. A 0.1
µF decoupling capacitor should be
connected between this pin and AGND.
21
V
DD
Positive Power Supply for Digital section. A 0.1
µF decoupling capacitor should be
connected between this pin and DGND. Both V
AA and VDD should be externally
tied together.
10, 25, 27
AGND
Analog Ground.
16
DGND
Digital Ground. Both AGND and DGND should be externally tied together.
ANALOG SIGNAL AND REFERENCE
28
BYPASS
Reference Decoupling Output. A 10 nF decoupling capacitor should be connected
between this pin and AGND.
2, 4
IRx, IRx
Differential Analog Inputs for the I receive channel. These are the primary receive
analog inputs and are selected by setting CR12 to a zero in the command register.
6, 8
QRx, QRx
Differential Analog Inputs for the Q receive channel. These are the primary receive
analog inputs and are selected by setting CR12 to a zero in the command register.
3, 5
AUX IRx, AUX IRx
Auxiliary Differential Analog Inputs for the I receive channel. The Auxiliary inputs
are selected by setting CR12 to a one in the command register.
7, 9
AUX QRx, AUX QRx
Auxiliary Differential Analog Inputs for the Q receive channel. The Auxiliary inputs
are selected by setting CR12 to a one in the command register.
24
AUX DAC1
Analog output from the 10-bit auxiliary DAC.
3, 22
AUX DAC2, AUX DAC3
Analog outputs from the 8-bit auxiliary DACs.
26
FS ADJUST
An external resistor is connected from this pin to ground to determine the full-
scale current for AUX DAC1, AUX DAC2, and AUX DAC3.
SERIAL INTERFACE AND CONTROL
20
MCLK
Master Clock, Digital Input. When operating in IS-54 Digital mode this pin should
be driven by a 6.2208 MHz CMOS compatible clock source and 5.12 MHz clock
source for Analog Mode.
19
DxCLK
Transmit Clock, Digital Output. This is a continuous clock equal to MCLK/2 which
can be used to clock the serial port of a DSP.
17
FRAME IN
Digital Input. This is used to frame the clocking in of 16-bit words for the control
registers serial interface.
18
DATA IN
Digital Input. Transmit Serial Data, digital input. This pin is used to clock in
data for the serial interface on the rising edge of DxCLK.
15
FRAME OUT
Digital Output. This output represents a buffered version of FRAME IN and is
controlled by the MODE1 pin. This pin can be used to daisy chain the
FRAME IN signal.
11
MODE1
Digital Input. This pin determines the state of FRAME OUT. When MODE1 is high,
FRAME IN is buffered and made available on FRAME OUT.
When MODE1 is low, FRAME OUT is in 3-STATE.
RECEIVE INTERFACE AND CONTROL
14
RxCLK
Output Clock for the receive section interface.
12
RxFRAME
Synchronization output for framing I and Q data at the receive interface.
13
RxDATA
Receive Data, digital output. I and Q data are available at this pin via a 16-bit serial
interface. Data is valid on the falling edge of RxCLK. I and Q data are clocked out
as two 16-bits words, with the I word being clocked first. The last bit in each 16-bit
word is a I/Q flag bit, indicating whether that word is an I word or a Q word.


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